{"product_id":"siemens-njg3f400-circuit-breaker","title":"Siemens | NJG3F400 | Circuit Breaker | 400A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered by Siemens, the NJG3F400 circuit breaker delivers robust protection for 480-volt systems in demanding industrial environments. With a 400-amp rating and a 3-pole configuration, it’s designed to interrupt fault currents safely and quickly, safeguarding downstream equipment and reducing the risk of extended outages.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e NJG3F400 (best compatibility reference)\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy the NJG3F400 stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted maintenance and retrofit solution:\u003c\/strong\u003e Replace aging or faulty breakers with a direct-fit unit that matches existing electrical characteristics, minimizing panel reconfiguration and downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade protection:\u003c\/strong\u003e The 400A capacity supports heavy feeder circuits and main protection for complex distribution systems without compromising safety or reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility guidance:\u003c\/strong\u003e Before ordering, verify fit and ratings; using the NJG3F400 part number ensures you’re aligning with the correct Siemens panel and a 480V system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEfficient sourcing for replacement projects:\u003c\/strong\u003e Matching the exact model streamlines inventory and service planning, helping prevent delays in critical maintenance windows.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical guidance for use and install\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm your panel model and bus configuration to ensure this 3-pole, 480V device is the correct fit.\u003c\/li\u003e \u003cli\u003eKeep the NJG3F400 part number handy for quick verification during service calls or job quotes.\u003c\/li\u003e \u003cli\u003eIf you’re stocking for a fleet of panels, consider keeping a spare NJG3F400 to reduce downtime when replacements are needed.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis Siemens NJG3F400 circuit breaker offers a precise, reliable solution for industrial protection where exact specifications matter. It’s a purpose-built component designed to keep critical equipment safe and operations running smoothly, not just another generic breaker.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427542323362,"sku":"NJG3F400","price":6625.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-njg3f400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}